MySQL XML Tools
The MySQL tools in Stylus Studio simplify XML related development tasks for working with MySQL and XML.
Microsoft .NET XML Tools for System.XML 1.0 and System.XML 2.0
Stylus Studio features integrated XML validation, XSLT transformation and XSLT debugging using the official Microsoft .NET XML processing components: System.XML 1.0 and System.XML 2.0.
XML Well-Formedness Checker & XML Indenter
Tidy up your XML documents with powerful integrated XML editing utilities including a single-click XML formatter, pretty printer, XML indenter and XML well formedness checker.
XSD Editor
XSD Editor provides a synchronized split-pane interface that simultaneously shows both a visual XSD Diagram and the underlying code, with changes in one pane immediately reflected in the other